Well, Debian on ARM should have texlive packaged.
I'm very interested in something like this myself, as I'm currently playing a bit with muPDF in order to create a PDF reader for the Kindle (yes, PDF is already supported, but I want something that I can configure some more and maybe integrate some of the PDF re-fit tools floating around). So I would like to know about your experiences.
I also found this thread here in the forums about conversion of epub to pdf:
https://www.mobileread.com/forums/showthread.php?t=75272
Though this would probably not help for your use case. I found a whole lot of information about going from Latex to EPub, but not the other way around.